A5069329980- Structural Analysis and Optimization
- Composite Structure Analysis and Optimization
- Structural Load-Bearing Analysis
- Vibration and Dynamic Analysis
- Structural Health Monitoring Techniques
- Concrete Corrosion and Durability
- Infrastructure Maintenance and Monitoring
- Structural Analysis of Composite Materials
- Corrosion Behavior and Inhibition
- Ultrasonics and Acoustic Wave Propagation
- Smart Materials for Construction
- Dynamics and Control of Mechanical Systems
- Laser and Thermal Forming Techniques
- Structural Engineering and Vibration Analysis
- Structural Engineering and Materials Analysis
- Non-Destructive Testing Techniques
Universidade Lusófona
2023-2024
Instituto Superior Técnico
2016-2024
University of Lisbon
2016-2024
Iscte – Instituto Universitário de Lisboa
2024
Universidade Nova de Lisboa
2015-2023
Universidad de la República de Uruguay
2018
Institute for Economic Research on Firms and Growth
2018
The effects of operational and environmental variability have been posed as one the biggest challenges to transit structural health monitoring (SHM) from research practice. To deal with that, machine learning algorithms proposed learn experience based on a reference data set. These work well if conditions under which bridge operates do not change over time. Meanwhile, climate has concerns for bridges. Although uncertainty associated magnitude is large, fact that our changing unequivocal....
This paper concerns the Eurocode 3 Part 1-3 (EN 1993-1-3) methods for calculating distortional buckling (bifurcation) load of cold-formed steel-lipped channels subjected to axial force, major and minor axis bending. More specifically, presents results a parametric study that assesses accuracy simplified method in EN 1993-1-3, which relies on direct/iterative hand calculations an approximate mechanical model, through comparison with “exact” numerical results, obtained using semi-analytical...
This paper presents the results of an investigation concerning free vibration behavior (undamped natural frequencies and mode shapes) thin-walled beams with rectangular multi-cell cross-section (assemblies parallel cells in a single direction). Besides local (plate-type) global (flexural, torsional extensional) modes, attention is paid to relatively less-known distortional which involve out-of-plane (warping) in-plane deformation, including displacements wall intersections. A computationally...
Pipelines are subject to wall-thickness loss due corrosion along time. Ultrasonic pulse-echo techniques widely used for thickness measurement achieving a high resolution. However, the precision of is highly dependent on temperature and ultrasonic system. This work presents an echo analysis method based appropriate temporal window threshold evaluate pipe using transducers. The results experimentally evaluated array transducers (5 MHz, 10 mm diameter) operating in mode with water coupling layer.
App4SHM is a mobile system for structural health monitoring of bridges. It consists front-end smartphone application, available on both Android and iOS, that used to measure the vibration frequencies backstage server software, accessible through any internet browser, perform most calculations manage measurement databases. This paper focuses module cables, where frequency observations are directly converted into cable tension forces based material geometrical characteristics cable. The...
Abstract Dedicated to Prof. Dr.‐Ing. habil. Joachim Lindner on the occasion of his 80th birthday This paper reports latest developments concerning application Generalised Beam Theory (GBT) thin‐walled members with deformable cross‐section and whose undeformed axis is a circular arc, no pre‐twist. Initially, fundamental equations relations are presented, leading first‐order equilibrium associated boundary conditions, which can be written in terms GBT modal matrices or stress resultants. Then,...
Abstract This paper presents a newly developed extension of the linear Generalised Beam Theory (GBT) formulation for members with circular axis, previously by authors, to stability analysis case. incorporates classic GBT kinematic assumptions, which ensure efficiency without sacrificing its accuracy. The finite element implementation proposed makes it possible calculate bifurcation loads and associated buckling mode shapes axis arbitrary flat‐walled cross‐sections, undergoing...